1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19 */
20 // snd_dma.c -- main control for any streaming sound output device
21
22 #include "quakedef.h"
23
24 #ifdef _WIN32
25 #include "winquake.h"
26 #endif
27
28 void S_Play(void);
29 void S_PlayVol(void);
30 void S_SoundList(void);
31 void S_Update_();
32 void S_StopAllSounds(qboolean clear);
33 void S_StopAllSoundsC(void);
34
35 // =======================================================================
36 // Internal sound data & structures
37 // =======================================================================
38
39 channel_t channels[MAX_CHANNELS];
40 int total_channels;
41
42 int snd_blocked = 0;
43 static qboolean snd_ambient = 1;
44 qboolean snd_initialized = false;
45
46 // pointer should go away
47 volatile dma_t *shm = 0;
48 volatile dma_t sn;
49
50 vec3_t listener_origin;
51 vec3_t listener_forward;
52 vec3_t listener_right;
53 vec3_t listener_up;
54 vec_t sound_nominal_clip_dist=1000.0;
55
56 int soundtime; // sample PAIRS
57 int paintedtime; // sample PAIRS
58
59
60 #define MAX_SFX 512
61 sfx_t *known_sfx; // hunk allocated [MAX_SFX]
62 int num_sfx;
63
64 sfx_t *ambient_sfx[NUM_AMBIENTS];
65
66 int desired_speed = 11025;
67 int desired_bits = 16;
68
69 int sound_started=0;
70
71 cvar_t bgmvolume = CVAR3("bgmvolume", "1", true);
72 cvar_t volume = CVAR3("volume", "0.7", true);
73
74 cvar_t nosound = CVAR2("nosound", "0");
75 cvar_t precache = CVAR2("precache", "1");
76 cvar_t loadas8bit = CVAR2("loadas8bit", "0");
77 cvar_t bgmbuffer = CVAR2("bgmbuffer", "4096");
78 cvar_t ambient_level = CVAR2("ambient_level", "0.3");
79 cvar_t ambient_fade = CVAR2("ambient_fade", "100");
80 cvar_t snd_noextraupdate = CVAR2("snd_noextraupdate", "0");
81 cvar_t snd_show = CVAR2("snd_show", "0");
82 cvar_t _snd_mixahead = CVAR3("_snd_mixahead", "0.1", true);
83
84
85 // ====================================================================
86 // User-setable variables
87 // ====================================================================
88
89
90 //
91 // Fake dma is a synchronous faking of the DMA progress used for
92 // isolating performance in the renderer. The fakedma_updates is
93 // number of times S_Update() is called per second.
94 //
95
96 qboolean fakedma = false;
97 int fakedma_updates = 15;
98
99
S_AmbientOff(void)100 void S_AmbientOff (void)
101 {
102 snd_ambient = false;
103 }
104
105
S_AmbientOn(void)106 void S_AmbientOn (void)
107 {
108 snd_ambient = true;
109 }
110
111
S_SoundInfo_f(void)112 void S_SoundInfo_f(void)
113 {
114 if (!sound_started || !shm)
115 {
116 Con_Printf ("sound system not started\n");
117 return;
118 }
119
120 Con_Printf("%5d stereo\n", shm->channels - 1);
121 Con_Printf("%5d samples\n", shm->samples);
122 Con_Printf("%5d samplepos\n", shm->samplepos);
123 Con_Printf("%5d samplebits\n", shm->samplebits);
124 Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
125 Con_Printf("%5d speed\n", shm->speed);
126 Con_Printf("0x%x dma buffer\n", shm->buffer);
127 Con_Printf("%5d total_channels\n", total_channels);
128 }
129
130
131 /*
132 ================
133 S_Startup
134 ================
135 */
136
S_Startup(void)137 void S_Startup (void)
138 {
139 int rc;
140
141 if (!snd_initialized)
142 return;
143
144 if (!fakedma)
145 {
146 rc = SNDDMA_Init();
147
148 if (!rc)
149 {
150 #ifndef _WIN32
151 Con_Printf("S_Startup: SNDDMA_Init failed.\n");
152 #endif
153 sound_started = 0;
154 return;
155 }
156 }
157
158 sound_started = 1;
159 }
160
161
162 /*
163 ================
164 S_Init
165 ================
166 */
S_Init(void)167 void S_Init (void)
168 {
169
170 Con_Printf("\nSound Initialization\n");
171
172 if (COM_CheckParm("-nosound"))
173 return;
174
175 if (COM_CheckParm("-simsound"))
176 fakedma = true;
177
178 Cmd_AddCommand("play", S_Play);
179 Cmd_AddCommand("playvol", S_PlayVol);
180 Cmd_AddCommand("stopsound", S_StopAllSoundsC);
181 Cmd_AddCommand("soundlist", S_SoundList);
182 Cmd_AddCommand("soundinfo", S_SoundInfo_f);
183
184 Cvar_RegisterVariable(&nosound);
185 Cvar_RegisterVariable(&volume);
186 Cvar_RegisterVariable(&precache);
187 Cvar_RegisterVariable(&loadas8bit);
188 Cvar_RegisterVariable(&bgmvolume);
189 Cvar_RegisterVariable(&bgmbuffer);
190 Cvar_RegisterVariable(&ambient_level);
191 Cvar_RegisterVariable(&ambient_fade);
192 Cvar_RegisterVariable(&snd_noextraupdate);
193 Cvar_RegisterVariable(&snd_show);
194 Cvar_RegisterVariable(&_snd_mixahead);
195
196 if (host_parms.memsize < 0x800000)
197 {
198 Cvar_Set ("loadas8bit", "1");
199 Con_Printf ("loading all sounds as 8bit\n");
200 }
201
202
203
204 snd_initialized = true;
205
206 S_Startup ();
207
208 SND_InitScaletable ();
209
210 known_sfx = (sfx_t*) Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t");
211 num_sfx = 0;
212
213 // create a piece of DMA memory
214
215 if (fakedma)
216 {
217 shm = (volatile dma_t*) Hunk_AllocName(sizeof(*shm), "shm");
218 shm->splitbuffer = 0;
219 shm->samplebits = 16;
220 shm->speed = 22050;
221 shm->channels = 2;
222 shm->samples = 32768;
223 shm->samplepos = 0;
224 shm->soundalive = true;
225 shm->gamealive = true;
226 shm->submission_chunk = 1;
227 shm->buffer = (unsigned char*) Hunk_AllocName(1<<16, "shmbuf");
228 }
229
230 if (shm)
231 {
232 Con_Printf ("Sound sampling rate: %i\n", shm->speed);
233 }
234 else
235 {
236 Con_Printf ("Sound sampling rate: undefined\n");
237 }
238
239 // provides a tick sound until washed clean
240
241 // if (shm->buffer)
242 // shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
243
244 ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav");
245 ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav");
246
247 S_StopAllSounds (true);
248 }
249
250
251 // =======================================================================
252 // Shutdown sound engine
253 // =======================================================================
254
S_Shutdown(void)255 void S_Shutdown(void)
256 {
257
258 if (!sound_started)
259 return;
260
261 if (shm)
262 shm->gamealive = 0;
263
264 shm = 0;
265 sound_started = 0;
266
267 if (!fakedma)
268 {
269 SNDDMA_Shutdown();
270 }
271 }
272
273
274 // =======================================================================
275 // Load a sound
276 // =======================================================================
277
278 /*
279 ==================
280 S_FindName
281
282 ==================
283 */
S_FindName(const char * name)284 sfx_t *S_FindName (const char *name)
285 {
286 int i;
287 sfx_t *sfx;
288
289 if (!name)
290 Sys_Error ("S_FindName: NULL\n");
291
292 if (Q_strlen(name) >= MAX_QPATH)
293 Sys_Error ("Sound name too long: %s", name);
294
295 // see if already loaded
296 for (i=0 ; i < num_sfx ; i++)
297 if (!Q_strcmp(known_sfx[i].name, name))
298 {
299 return &known_sfx[i];
300 }
301
302 if (num_sfx == MAX_SFX)
303 Sys_Error ("S_FindName: out of sfx_t");
304
305 sfx = &known_sfx[i];
306 strcpy (sfx->name, name);
307
308 num_sfx++;
309
310 return sfx;
311 }
312
313
314 /*
315 ==================
316 S_TouchSound
317
318 ==================
319 */
S_TouchSound(const char * name)320 void S_TouchSound (const char *name)
321 {
322 sfx_t *sfx;
323
324 if (!sound_started)
325 return;
326
327 sfx = S_FindName (name);
328 Cache_Check (&sfx->cache);
329 }
330
331 /*
332 ==================
333 S_PrecacheSound
334
335 ==================
336 */
S_PrecacheSound(const char * name)337 sfx_t *S_PrecacheSound (const char *name)
338 {
339 sfx_t *sfx;
340
341 if (!sound_started || nosound.value)
342 return NULL;
343
344 sfx = S_FindName (name);
345
346 // cache it in
347 if (precache.value)
348 S_LoadSound (sfx);
349
350 return sfx;
351 }
352
353
354 //=============================================================================
355
356 /*
357 =================
358 SND_PickChannel
359 =================
360 */
SND_PickChannel(int entnum,int entchannel)361 channel_t *SND_PickChannel(int entnum, int entchannel)
362 {
363 int ch_idx;
364 int first_to_die;
365 int life_left;
366
367 // Check for replacement sound, or find the best one to replace
368 first_to_die = -1;
369 life_left = 0x7fffffff;
370 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
371 {
372 if (entchannel != 0 // channel 0 never overrides
373 && channels[ch_idx].entnum == entnum
374 && (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
375 { // allways override sound from same entity
376 first_to_die = ch_idx;
377 break;
378 }
379
380 // don't let monster sounds override player sounds
381 if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
382 continue;
383
384 if (channels[ch_idx].end - paintedtime < life_left)
385 {
386 life_left = channels[ch_idx].end - paintedtime;
387 first_to_die = ch_idx;
388 }
389 }
390
391 if (first_to_die == -1)
392 return NULL;
393
394 if (channels[first_to_die].sfx)
395 channels[first_to_die].sfx = NULL;
396
397 return &channels[first_to_die];
398 }
399
400 /*
401 =================
402 SND_Spatialize
403 =================
404 */
SND_Spatialize(channel_t * ch)405 void SND_Spatialize(channel_t *ch)
406 {
407 vec_t dot;
408 vec_t ldist, rdist, dist;
409 vec_t lscale, rscale, scale;
410 vec3_t source_vec;
411 sfx_t *snd;
412
413 // anything coming from the view entity will allways be full volume
414 if (ch->entnum == cl.viewentity)
415 {
416 ch->leftvol = ch->master_vol;
417 ch->rightvol = ch->master_vol;
418 return;
419 }
420
421 // calculate stereo seperation and distance attenuation
422
423 snd = ch->sfx;
424 VectorSubtract(ch->origin, listener_origin, source_vec);
425
426 dist = VectorNormalize(source_vec) * ch->dist_mult;
427
428 dot = DotProduct(listener_right, source_vec);
429
430 if (shm->channels == 1)
431 {
432 rscale = 1.0;
433 lscale = 1.0;
434 }
435 else
436 {
437 rscale = 1.0 + dot;
438 lscale = 1.0 - dot;
439 }
440
441 // add in distance effect
442 scale = (1.0 - dist) * rscale;
443 ch->rightvol = (int) (ch->master_vol * scale);
444 if (ch->rightvol < 0)
445 ch->rightvol = 0;
446
447 scale = (1.0 - dist) * lscale;
448 ch->leftvol = (int) (ch->master_vol * scale);
449 if (ch->leftvol < 0)
450 ch->leftvol = 0;
451 }
452
453
454 // =======================================================================
455 // Start a sound effect
456 // =======================================================================
457
S_StartSound(int entnum,int entchannel,sfx_t * sfx,vec3_t origin,float fvol,float attenuation)458 void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
459 {
460 channel_t *target_chan, *check;
461 sfxcache_t *sc;
462 int vol;
463 int ch_idx;
464 int skip;
465
466 if (!sound_started)
467 return;
468
469 if (!sfx)
470 return;
471
472 if (nosound.value)
473 return;
474
475 vol = (int)(fvol*255);
476
477 // pick a channel to play on
478 target_chan = SND_PickChannel(entnum, entchannel);
479 if (!target_chan)
480 return;
481
482 // spatialize
483 memset (target_chan, 0, sizeof(*target_chan));
484 VectorCopy(origin, target_chan->origin);
485 target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
486 target_chan->master_vol = vol;
487 target_chan->entnum = entnum;
488 target_chan->entchannel = entchannel;
489 SND_Spatialize(target_chan);
490
491 if (!target_chan->leftvol && !target_chan->rightvol)
492 return; // not audible at all
493
494 // new channel
495 sc = S_LoadSound (sfx);
496 if (!sc)
497 {
498 target_chan->sfx = NULL;
499 return; // couldn't load the sound's data
500 }
501
502 target_chan->sfx = sfx;
503 target_chan->pos = 0;
504 target_chan->end = paintedtime + sc->length;
505
506 // if an identical sound has also been started this frame, offset the pos
507 // a bit to keep it from just making the first one louder
508 check = &channels[NUM_AMBIENTS];
509 for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
510 {
511 if (check == target_chan)
512 continue;
513 if (check->sfx == sfx && !check->pos)
514 {
515 skip = rand () % (int)(0.1*shm->speed);
516 if (skip >= target_chan->end)
517 skip = target_chan->end - 1;
518 target_chan->pos += skip;
519 target_chan->end -= skip;
520 break;
521 }
522
523 }
524 }
525
S_StopSound(int entnum,int entchannel)526 void S_StopSound(int entnum, int entchannel)
527 {
528 int i;
529
530 for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
531 {
532 if (channels[i].entnum == entnum
533 && channels[i].entchannel == entchannel)
534 {
535 channels[i].end = 0;
536 channels[i].sfx = NULL;
537 return;
538 }
539 }
540 }
541
S_StopAllSounds(qboolean clear)542 void S_StopAllSounds(qboolean clear)
543 {
544 int i;
545
546 if (!sound_started)
547 return;
548
549 total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
550
551 for (i=0 ; i<MAX_CHANNELS ; i++)
552 if (channels[i].sfx)
553 channels[i].sfx = NULL;
554
555 Q_memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
556
557 if (clear)
558 S_ClearBuffer ();
559 }
560
S_StopAllSoundsC(void)561 void S_StopAllSoundsC (void)
562 {
563 S_StopAllSounds (true);
564 }
565
S_ClearBuffer(void)566 void S_ClearBuffer (void)
567 {
568 int clear;
569
570 #ifdef _WIN32
571 if (!sound_started || !shm || (!shm->buffer && !pDSBuf))
572 #else
573 if (!sound_started || !shm || !shm->buffer)
574 #endif
575 return;
576
577 if (shm->samplebits == 8)
578 clear = 0x80;
579 else
580 clear = 0;
581
582 #ifdef _WIN32
583 if (pDSBuf)
584 {
585 DWORD dwSize;
586 DWORD *pData;
587 int reps;
588 HRESULT hresult;
589
590 reps = 0;
591
592 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pData, &dwSize, NULL, NULL, 0)) != DS_OK)
593 {
594 if (hresult != DSERR_BUFFERLOST)
595 {
596 Con_Printf ("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
597 S_Shutdown ();
598 return;
599 }
600
601 if (++reps > 10000)
602 {
603 Con_Printf ("S_ClearBuffer: DS: couldn't restore buffer\n");
604 S_Shutdown ();
605 return;
606 }
607 }
608
609 Q_memset(pData, clear, shm->samples * shm->samplebits/8);
610
611 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
612
613 }
614 else
615 #endif
616 {
617 Q_memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
618 }
619 }
620
621
622 /*
623 =================
624 S_StaticSound
625 =================
626 */
S_StaticSound(sfx_t * sfx,vec3_t origin,float vol,float attenuation)627 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
628 {
629 channel_t *ss;
630 sfxcache_t *sc;
631
632 if (!sfx)
633 return;
634
635 if (total_channels == MAX_CHANNELS)
636 {
637 Con_Printf ("total_channels == MAX_CHANNELS\n");
638 return;
639 }
640
641 ss = &channels[total_channels];
642 total_channels++;
643
644 sc = S_LoadSound (sfx);
645 if (!sc)
646 return;
647
648 if (sc->loopstart == -1)
649 {
650 Con_Printf ("Sound %s not looped\n", sfx->name);
651 return;
652 }
653
654 ss->sfx = sfx;
655 VectorCopy (origin, ss->origin);
656 ss->master_vol = (int) vol;
657 ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
658 ss->end = paintedtime + sc->length;
659
660 SND_Spatialize (ss);
661 }
662
663
664 //=============================================================================
665
666 /*
667 ===================
668 S_UpdateAmbientSounds
669 ===================
670 */
S_UpdateAmbientSounds(void)671 void S_UpdateAmbientSounds (void)
672 {
673 mleaf_t *l;
674 float vol;
675 int ambient_channel;
676 channel_t *chan;
677
678 if (!snd_ambient)
679 return;
680
681 // calc ambient sound levels
682 if (!cl.worldmodel)
683 return;
684
685 l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
686 if (!l || !ambient_level.value)
687 {
688 for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
689 channels[ambient_channel].sfx = NULL;
690 return;
691 }
692
693 for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
694 {
695 chan = &channels[ambient_channel];
696 chan->sfx = ambient_sfx[ambient_channel];
697
698 vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
699 if (vol < 8)
700 vol = 0;
701
702 // don't adjust volume too fast
703 if (chan->master_vol < vol)
704 {
705 chan->master_vol += (int) (host_frametime * ambient_fade.value);
706 if (chan->master_vol > vol)
707 chan->master_vol = (int) vol;
708 }
709 else if (chan->master_vol > vol)
710 {
711 chan->master_vol -= (int) (host_frametime * ambient_fade.value);
712 if (chan->master_vol < vol)
713 chan->master_vol = (int) vol;
714 }
715
716 chan->leftvol = chan->rightvol = chan->master_vol;
717 }
718 }
719
720
721 /*
722 ============
723 S_Update
724
725 Called once each time through the main loop
726 ============
727 */
S_Update(vec3_t origin,vec3_t forward,vec3_t right,vec3_t up)728 void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
729 {
730 int i, j;
731 int total;
732 channel_t *ch;
733 channel_t *combine;
734
735 if (!sound_started || (snd_blocked > 0))
736 return;
737
738 VectorCopy(origin, listener_origin);
739 VectorCopy(forward, listener_forward);
740 VectorCopy(right, listener_right);
741 VectorCopy(up, listener_up);
742
743 // update general area ambient sound sources
744 S_UpdateAmbientSounds ();
745
746 combine = NULL;
747
748 // update spatialization for static and dynamic sounds
749 ch = channels+NUM_AMBIENTS;
750 for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
751 {
752 if (!ch->sfx)
753 continue;
754 SND_Spatialize(ch); // respatialize channel
755 if (!ch->leftvol && !ch->rightvol)
756 continue;
757
758 // try to combine static sounds with a previous channel of the same
759 // sound effect so we don't mix five torches every frame
760
761 if (i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
762 {
763 // see if it can just use the last one
764 if (combine && combine->sfx == ch->sfx)
765 {
766 combine->leftvol += ch->leftvol;
767 combine->rightvol += ch->rightvol;
768 ch->leftvol = ch->rightvol = 0;
769 continue;
770 }
771 // search for one
772 combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
773 for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
774 if (combine->sfx == ch->sfx)
775 break;
776
777 if (j == total_channels)
778 {
779 combine = NULL;
780 }
781 else
782 {
783 if (combine != ch)
784 {
785 combine->leftvol += ch->leftvol;
786 combine->rightvol += ch->rightvol;
787 ch->leftvol = ch->rightvol = 0;
788 }
789 continue;
790 }
791 }
792
793
794 }
795
796 //
797 // debugging output
798 //
799 if (snd_show.value)
800 {
801 total = 0;
802 ch = channels;
803 for (i=0 ; i<total_channels; i++, ch++)
804 if (ch->sfx && (ch->leftvol || ch->rightvol) )
805 {
806 //Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
807 total++;
808 }
809
810 Con_Printf ("----(%i)----\n", total);
811 }
812
813 // mix some sound
814 S_Update_();
815 }
816
GetSoundtime(void)817 void GetSoundtime(void)
818 {
819 int samplepos;
820 static int buffers;
821 static int oldsamplepos;
822 int fullsamples;
823
824 fullsamples = shm->samples / shm->channels;
825
826 // it is possible to miscount buffers if it has wrapped twice between
827 // calls to S_Update. Oh well.
828 #ifdef __sun__
829 soundtime = SNDDMA_GetSamples();
830 #else
831 samplepos = SNDDMA_GetDMAPos();
832
833
834 if (samplepos < oldsamplepos)
835 {
836 buffers++; // buffer wrapped
837
838 if (paintedtime > 0x40000000)
839 { // time to chop things off to avoid 32 bit limits
840 buffers = 0;
841 paintedtime = fullsamples;
842 S_StopAllSounds (true);
843 }
844 }
845 oldsamplepos = samplepos;
846
847 soundtime = buffers*fullsamples + samplepos/shm->channels;
848 #endif
849 }
850
S_ExtraUpdate(void)851 void S_ExtraUpdate (void)
852 {
853
854 #ifdef _WIN32
855 IN_Accumulate ();
856 #endif
857
858 if (snd_noextraupdate.value)
859 return; // don't pollute timings
860 S_Update_();
861 }
862
S_Update_(void)863 void S_Update_(void)
864 {
865 unsigned endtime;
866 int samps;
867
868 if (!sound_started || (snd_blocked > 0))
869 return;
870
871 // Updates DMA time
872 GetSoundtime();
873
874 // check to make sure that we haven't overshot
875 if (paintedtime < soundtime)
876 {
877 //Con_Printf ("S_Update_ : overflow\n");
878 paintedtime = soundtime;
879 }
880
881 // mix ahead of current position
882 endtime = (unsigned) (soundtime + _snd_mixahead.value * shm->speed);
883 samps = shm->samples >> (shm->channels-1);
884 if ((int) (endtime - soundtime) > samps)
885 endtime = soundtime + samps;
886
887 #ifdef _WIN32
888 // if the buffer was lost or stopped, restore it and/or restart it
889 {
890 DWORD dwStatus;
891
892 if (pDSBuf)
893 {
894 if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DD_OK)
895 Con_Printf ("Couldn't get sound buffer status\n");
896
897 if (dwStatus & DSBSTATUS_BUFFERLOST)
898 pDSBuf->lpVtbl->Restore (pDSBuf);
899
900 if (!(dwStatus & DSBSTATUS_PLAYING))
901 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
902 }
903 }
904 #endif
905
906 S_PaintChannels (endtime);
907
908 SNDDMA_Submit ();
909 }
910
911 /*
912 ===============================================================================
913
914 console functions
915
916 ===============================================================================
917 */
918
S_Play(void)919 void S_Play(void)
920 {
921 static int hash=345;
922 int i;
923 char name[256];
924 sfx_t *sfx;
925
926 i = 1;
927 while (i<Cmd_Argc())
928 {
929 if (!Q_strrchr(Cmd_Argv(i), '.'))
930 {
931 Q_strcpy(name, Cmd_Argv(i));
932 Q_strcat(name, ".wav");
933 }
934 else
935 Q_strcpy(name, Cmd_Argv(i));
936 sfx = S_PrecacheSound(name);
937 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
938 i++;
939 }
940 }
941
S_PlayVol(void)942 void S_PlayVol(void)
943 {
944 static int hash=543;
945 int i;
946 float vol;
947 char name[256];
948 sfx_t *sfx;
949
950 i = 1;
951 while (i<Cmd_Argc())
952 {
953 if (!Q_strrchr(Cmd_Argv(i), '.'))
954 {
955 Q_strcpy(name, Cmd_Argv(i));
956 Q_strcat(name, ".wav");
957 }
958 else
959 Q_strcpy(name, Cmd_Argv(i));
960 sfx = S_PrecacheSound(name);
961 vol = Q_atof(Cmd_Argv(i+1));
962 S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
963 i+=2;
964 }
965 }
966
S_SoundList(void)967 void S_SoundList(void)
968 {
969 int i;
970 sfx_t *sfx;
971 sfxcache_t *sc;
972 int size, total;
973
974 total = 0;
975 for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
976 {
977 sc = (sfxcache_t*) Cache_Check (&sfx->cache);
978 if (!sc)
979 continue;
980 size = sc->length*sc->width*(sc->stereo+1);
981 total += size;
982 if (sc->loopstart >= 0)
983 Con_Printf ("L");
984 else
985 Con_Printf (" ");
986 Con_Printf("(%2db) %6i : %s\n",sc->width*8, size, sfx->name);
987 }
988 Con_Printf ("Total resident: %i\n", total);
989 }
990
991
S_LocalSound(const char * sound)992 void S_LocalSound (const char *sound)
993 {
994 sfx_t *sfx;
995
996 if (nosound.value)
997 return;
998 if (!sound_started)
999 return;
1000
1001 sfx = S_PrecacheSound (sound);
1002 if (!sfx)
1003 {
1004 Con_Printf ("S_LocalSound: can't cache %s\n", sound);
1005 return;
1006 }
1007 S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1008 }
1009
1010
S_ClearPrecache(void)1011 void S_ClearPrecache (void)
1012 {
1013 }
1014
1015
S_BeginPrecaching(void)1016 void S_BeginPrecaching (void)
1017 {
1018 }
1019
1020
S_EndPrecaching(void)1021 void S_EndPrecaching (void)
1022 {
1023 }
1024
1025